CVE-2022-20952

2023-02-1615:27:16

cisco

www.cve.org

cisco

web appliance

vulnerability

remote attacker

traffic rules

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

5.7 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

40.5%

JSON

A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA), could allow an unauthenticated, remote attacker to bypass a configured rule, thereby allowing traffic onto a network that should have been blocked.

This vulnerability exists because malformed, encoded traffic is not properly detected. An attacker could exploit this vulnerability by connecting through an affected device to a malicious server and receiving malformed HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device.

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Cisco Secure Web Appliance",
    "versions": [
      {
        "version": "11.8.0-414",
        "status": "affected"
      },
      {
        "version": "11.8.1-023",
        "status": "affected"
      },
      {
        "version": "11.8.3-018",
        "status": "affected"
      },
      {
        "version": "11.8.3-021",
        "status": "affected"
      },
      {
        "version": "12.0.1-268",
        "status": "affected"
      },
      {
        "version": "12.0.3-007",
        "status": "affected"
      },
      {
        "version": "12.5.2-007",
        "status": "affected"
      },
      {
        "version": "12.5.1-011",
        "status": "affected"
      },
      {
        "version": "12.5.4-005",
        "status": "affected"
      },
      {
        "version": "12.5.5-004",
        "status": "affected"
      },
      {
        "version": "14.5.0-498",
        "status": "affected"
      },
      {
        "version": "14.0.3-014",
        "status": "affected"
      },
      {
        "version": "14.0.2-012",
        "status": "affected"
      }
    ]
  }
]